WO2005026619A1 - Sheathed-element glow plug comprising a specially embedded contact element - Google Patents
Sheathed-element glow plug comprising a specially embedded contact element Download PDFInfo
- Publication number
- WO2005026619A1 WO2005026619A1 PCT/DE2004/001308 DE2004001308W WO2005026619A1 WO 2005026619 A1 WO2005026619 A1 WO 2005026619A1 DE 2004001308 W DE2004001308 W DE 2004001308W WO 2005026619 A1 WO2005026619 A1 WO 2005026619A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- glow plug
- contact element
- housing
- plug according
- plastic sleeve
- Prior art date
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23Q—IGNITION; EXTINGUISHING-DEVICES
- F23Q7/00—Incandescent ignition; Igniters using electrically-produced heat, e.g. lighters for cigarettes; Electrically-heated glowing plugs
- F23Q7/001—Glowing plugs for internal-combustion engines
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23Q—IGNITION; EXTINGUISHING-DEVICES
- F23Q7/00—Incandescent ignition; Igniters using electrically-produced heat, e.g. lighters for cigarettes; Electrically-heated glowing plugs
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02P—IGNITION, OTHER THAN COMPRESSION IGNITION, FOR INTERNAL-COMBUSTION ENGINES; TESTING OF IGNITION TIMING IN COMPRESSION-IGNITION ENGINES
- F02P19/00—Incandescent ignition, e.g. during starting of internal combustion engines; Combination of incandescent and spark ignition
Definitions
- the invention relates to a glow plug for a fuel engine, consisting of a candle housing, a connector part arranged on the plug housing for the electrical
- Electricity and a pen heater usually a pipe with an embedded heating element.
- the connecting part and the heating element are electrically coupled via a connecting bolt and a contact element.
- the contact element forms the so-called positive contact with the connection bolt and the connection area of the pin heater inside the housing.
- the invention relates in particular to designs in which the contact is produced by an elastic conductor element, such as a graphite jolette.
- ceramic adapter sleeves are used for insulation and fixation. These cover the connecting bolt and the graphite tablet and thus prevent contact with the housing. At the same time, they ensure that the contact element remains in a defined position in which good contact with the pin heater or with the heating element is ensured.
- Glow plugs with small diameters are often required. Since the electrical properties are determined by the pin heater and the connecting bolt or their dimensions, there is little space between the connecting bolt and the housing.
- the clamping sleeves must therefore be manufactured with a small wall thickness, which is associated with high manufacturing and cost expenditure for ceramic materials.
- the object of the invention is to propose a glow plug which shows a stable fixation of the contact element and in which the fixation and insulation of the contact element can be produced inexpensively.
- the solution to the problem is that the connecting bolt and the contact element are at least partially surrounded by an electrically insulating plastic sleeve within the housing.
- a sleeve preferably a plastic adapter sleeve
- very simple electrical insulation from the housing is achieved.
- the plastic sleeves have the advantage over ceramic sleeves that they can be manufactured more simply and therefore more cost-effectively. This applies in particular to sleeves with thin walls, as are often required in glow plugs.
- Plastics can provide good insulation even with thin walls and are at the same time robust enough to withstand further processing steps. If, for example, a support tube surrounding the heating element is connected to the housing, which is done by pressing, hammering, soldering or welding, strong forces sometimes also act on the plastic sleeve.
- Plastic sleeves can easily be of various dimensions and
- Molds are made.
- An advantageous embodiment is the production of the plastic sleeve as an adapter sleeve.
- the contact element To make good contact, the contact element must have as large an area as possible on the heating element and the connecting bolt. couple the zen. For a tubular component such as the glow plug, a cylindrical shape of the contact element is therefore appropriate. In order to ensure adequate insulation from the housing, the plastic sleeve must therefore completely surround the cylinder jacket.
- plastics can also be provided with elastic properties.
- the plastic sleeve has an elasticity in the radial and or longitudinal direction. The elasticity increases the robustness of the component and reduces the likelihood of breakage during assembly or during loads during operation.
- the plastic sleeve can be made in one piece or, in a further advantageous embodiment, also in multiple pieces. The individual parts can then be combined in a modular principle for glow plugs of different types.
- Figure 1 is a schematic representation of part of a glow plug, in section. Description of the embodiment
- This glow plug 1 shows the parts of a glow plug 1 on which the invention is based.
- This glow plug 1 consists of a plug housing 2 and a connection area 3 of a pin heater 4, not shown.
- connection bolt 5 is provided within the housing 2.
- a contact element 6 is provided between these two elements. This is preferably elastic.
- Such a contact element 6 can be, for example, a graphite tablet.
- a plastic sleeve 7 is inserted into the housing 2 according to the invention, within which the connecting pin 4 is arranged.
- This plastic sleeve 7 can be easily and inexpensively manufactured with a small wall thickness 8.
- a recess 9 is provided in the connection area 3, into which the contact element 6 can be inserted at least in part.
- the sleeve 7 is preferably formed in one piece. It is designed as an adapter sleeve and thus lies against the inner wall 10 of the housing 2.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Resistance Heating (AREA)
- Ignition Installations For Internal Combustion Engines (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/569,220 US20070084845A1 (en) | 2003-08-28 | 2004-06-23 | Sheated-element glow plug having a particularly embedded contact element |
BRPI0413442-7A BRPI0413442A (en) | 2003-08-28 | 2004-06-23 | glow plug with specially incorporated contact element |
JP2006521383A JP2006528761A (en) | 2003-08-28 | 2004-06-23 | Seeds type glow plug with contact element embedded in particular |
EP04738757.6A EP1660817B1 (en) | 2003-08-28 | 2004-06-23 | Sheathed-element glow plug comprising a specially embedded contact element |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10339641A DE10339641A1 (en) | 2003-08-28 | 2003-08-28 | Pencil-type glow plug for an internal combustion engine comprises a connecting pin and a contact element that are partly surrounded by an electrically insulating plastic sleeve within the plug housing |
DE10339641.1 | 2003-08-28 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2005026619A1 true WO2005026619A1 (en) | 2005-03-24 |
Family
ID=34202148
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE2004/001308 WO2005026619A1 (en) | 2003-08-28 | 2004-06-23 | Sheathed-element glow plug comprising a specially embedded contact element |
Country Status (7)
Country | Link |
---|---|
US (1) | US20070084845A1 (en) |
EP (1) | EP1660817B1 (en) |
JP (1) | JP2006528761A (en) |
KR (1) | KR20060125690A (en) |
BR (1) | BRPI0413442A (en) |
DE (1) | DE10339641A1 (en) |
WO (1) | WO2005026619A1 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR3025153B1 (en) * | 2014-09-01 | 2016-12-09 | Bosch Gmbh Robert | GLOW PLUG |
DE102014220036A1 (en) | 2014-10-02 | 2016-04-07 | Robert Bosch Gmbh | glow plug |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0103775A2 (en) * | 1982-08-26 | 1984-03-28 | Robert Bosch Gmbh | Glow plug for internal combustion engines |
WO1986001878A1 (en) * | 1984-09-21 | 1986-03-27 | Robert Bosch Gmbh | Sheathed-element glow plug for internal combustion engines |
DE3621216A1 (en) * | 1985-06-27 | 1987-02-05 | Jidosha Kiki Co | GLOW PLUG FOR DIESEL MACHINES |
EP0798515A2 (en) * | 1996-03-29 | 1997-10-01 | Cooper Industries Italia S.p.A. | Incandescent heater plug, particularly for diesel engines |
DE10020328A1 (en) * | 1999-08-27 | 2001-03-01 | Bosch Gmbh Robert | Ceramic glow plug |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4335292A1 (en) * | 1993-10-15 | 1995-04-20 | Beru Werk Ruprecht Gmbh Co A | Glow plug |
JPH10208853A (en) * | 1996-11-19 | 1998-08-07 | Ngk Spark Plug Co Ltd | Ceramic heater and manufacture thereof |
EP1125086B1 (en) * | 1999-08-27 | 2004-04-21 | Robert Bosch Gmbh | Ceramic sheathed element glow plug |
ES2231250T3 (en) * | 1999-08-27 | 2005-05-16 | Robert Bosch Gmbh | INCANDESCENT SPARK PLUG SPARK TYPE. |
EP1162407B1 (en) * | 2000-08-11 | 2002-01-30 | Federal-Mogul Ignition Srl | Glow plug for internal combustion engines |
US7115836B2 (en) * | 2004-06-29 | 2006-10-03 | Ngk Spark Plug Co., Ltd. | Glow plug |
-
2003
- 2003-08-28 DE DE10339641A patent/DE10339641A1/en not_active Withdrawn
-
2004
- 2004-06-23 EP EP04738757.6A patent/EP1660817B1/en not_active Expired - Lifetime
- 2004-06-23 BR BRPI0413442-7A patent/BRPI0413442A/en not_active Application Discontinuation
- 2004-06-23 US US10/569,220 patent/US20070084845A1/en not_active Abandoned
- 2004-06-23 JP JP2006521383A patent/JP2006528761A/en active Pending
- 2004-06-23 KR KR1020067003971A patent/KR20060125690A/en not_active Application Discontinuation
- 2004-06-23 WO PCT/DE2004/001308 patent/WO2005026619A1/en active Application Filing
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0103775A2 (en) * | 1982-08-26 | 1984-03-28 | Robert Bosch Gmbh | Glow plug for internal combustion engines |
WO1986001878A1 (en) * | 1984-09-21 | 1986-03-27 | Robert Bosch Gmbh | Sheathed-element glow plug for internal combustion engines |
DE3621216A1 (en) * | 1985-06-27 | 1987-02-05 | Jidosha Kiki Co | GLOW PLUG FOR DIESEL MACHINES |
EP0798515A2 (en) * | 1996-03-29 | 1997-10-01 | Cooper Industries Italia S.p.A. | Incandescent heater plug, particularly for diesel engines |
DE10020328A1 (en) * | 1999-08-27 | 2001-03-01 | Bosch Gmbh Robert | Ceramic glow plug |
Also Published As
Publication number | Publication date |
---|---|
BRPI0413442A (en) | 2006-10-17 |
EP1660817A1 (en) | 2006-05-31 |
US20070084845A1 (en) | 2007-04-19 |
KR20060125690A (en) | 2006-12-06 |
JP2006528761A (en) | 2006-12-21 |
DE10339641A1 (en) | 2005-03-24 |
EP1660817B1 (en) | 2017-03-15 |
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